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/*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef GENERIC_KEYDATA_65533_C
#define GENERIC_KEYDATA_65533_C 1
#include <time.h>
#include <dst/dst.h>
/*
* ISC_FORMATHTTPTIMESTAMP_SIZE needs to be 30 in C locale and potentially
* more for other locales to handle longer national abbreviations when
* expanding strftime's %a and %b.
*/
#define ISC_FORMATHTTPTIMESTAMP_SIZE 50
static void
isc_time_formathttptimestamp(const struct timespec *t, char *buf, size_t len) {
size_t flen;
/*
* 5 spaces, 1 comma, 3 GMT, 2 %d, 4 %Y, 8 %H:%M:%S, 3+ %a, 3+ %b (29+)
*/
flen = strftime(buf, len, "%a, %d %b %Y %H:%M:%S GMT",
gmtime(&t->tv_sec));
INSIST(flen < len);
}
static inline isc_result_t
totext_keydata(ARGS_TOTEXT) {
isc_region_t sr;
char buf[sizeof("64000")];
unsigned int flags;
unsigned char algorithm;
unsigned long refresh, add, deltime;
char algbuf[DNS_NAME_FORMATSIZE];
const char *keyinfo;
REQUIRE(rdata->type == dns_rdatatype_keydata);
if ((tctx->flags & DNS_STYLEFLAG_KEYDATA) == 0 || rdata->length < 16)
return (unknown_totext(rdata, tctx, target));
dns_rdata_toregion(rdata, &sr);
/* refresh timer */
refresh = uint32_fromregion(&sr);
isc_region_consume(&sr, 4);
RETERR(dns_time32_totext(refresh, target));
RETERR(isc_str_tobuffer(" ", target));
/* add hold-down */
add = uint32_fromregion(&sr);
isc_region_consume(&sr, 4);
RETERR(dns_time32_totext(add, target));
RETERR(isc_str_tobuffer(" ", target));
/* remove hold-down */
deltime = uint32_fromregion(&sr);
isc_region_consume(&sr, 4);
RETERR(dns_time32_totext(deltime, target));
RETERR(isc_str_tobuffer(" ", target));
/* flags */
flags = uint16_fromregion(&sr);
isc_region_consume(&sr, 2);
snprintf(buf, sizeof(buf), "%u", flags);
RETERR(isc_str_tobuffer(buf, target));
RETERR(isc_str_tobuffer(" ", target));
if ((flags & DNS_KEYFLAG_KSK) != 0) {
if (flags & DNS_KEYFLAG_REVOKE)
keyinfo = "revoked KSK";
else
keyinfo = "KSK";
} else
keyinfo = "ZSK";
/* protocol */
snprintf(buf, sizeof(buf), "%u", sr.base[0]);
isc_region_consume(&sr, 1);
RETERR(isc_str_tobuffer(buf, target));
RETERR(isc_str_tobuffer(" ", target));
/* algorithm */
algorithm = sr.base[0];
snprintf(buf, sizeof(buf), "%u", algorithm);
isc_region_consume(&sr, 1);
RETERR(isc_str_tobuffer(buf, target));
/* No Key? */
if ((flags & 0xc000) == 0xc000)
return (ISC_R_SUCCESS);
/* key */
if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
RETERR(isc_str_tobuffer(" (", target));
RETERR(isc_str_tobuffer(tctx->linebreak, target));
if (tctx->width == 0) /* No splitting */
RETERR(isc_base64_totext(&sr, 60, "", target));
else
RETERR(isc_base64_totext(&sr, tctx->width - 2,
tctx->linebreak, target));
if ((tctx->flags & DNS_STYLEFLAG_RRCOMMENT) != 0)
RETERR(isc_str_tobuffer(tctx->linebreak, target));
else if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
RETERR(isc_str_tobuffer(" ", target));
if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
RETERR(isc_str_tobuffer(")", target));
if ((tctx->flags & DNS_STYLEFLAG_RRCOMMENT) != 0) {
isc_region_t tmpr;
char rbuf[ISC_FORMATHTTPTIMESTAMP_SIZE];
char abuf[ISC_FORMATHTTPTIMESTAMP_SIZE];
char dbuf[ISC_FORMATHTTPTIMESTAMP_SIZE];
struct timespec t;
RETERR(isc_str_tobuffer(" ; ", target));
RETERR(isc_str_tobuffer(keyinfo, target));
dns_secalg_format((dns_secalg_t) algorithm, algbuf,
sizeof(algbuf));
RETERR(isc_str_tobuffer("; alg = ", target));
RETERR(isc_str_tobuffer(algbuf, target));
RETERR(isc_str_tobuffer("; key id = ", target));
dns_rdata_toregion(rdata, &tmpr);
/* Skip over refresh, addhd, and removehd */
isc_region_consume(&tmpr, 12);
snprintf(buf, sizeof(buf), "%u",
dst_region_computeid(&tmpr, algorithm));
RETERR(isc_str_tobuffer(buf, target));
if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0) {
time_t now;
time(&now);
RETERR(isc_str_tobuffer(tctx->linebreak, target));
RETERR(isc_str_tobuffer("; next refresh: ", target));
t.tv_sec = refresh;
t.tv_nsec = 0;
isc_time_formathttptimestamp(&t, rbuf, sizeof(rbuf));
RETERR(isc_str_tobuffer(rbuf, target));
if (add == 0U) {
RETERR(isc_str_tobuffer(tctx->linebreak, target));
RETERR(isc_str_tobuffer("; no trust", target));
} else {
RETERR(isc_str_tobuffer(tctx->linebreak, target));
if ((time_t)add < now) {
RETERR(isc_str_tobuffer("; trusted since: ",
target));
} else {
RETERR(isc_str_tobuffer("; trust pending: ",
target));
}
t.tv_sec = add;
t.tv_nsec = 0;
isc_time_formathttptimestamp(&t, abuf,
sizeof(abuf));
RETERR(isc_str_tobuffer(abuf, target));
}
if (deltime != 0U) {
RETERR(isc_str_tobuffer(tctx->linebreak, target));
RETERR(isc_str_tobuffer("; removal pending: ",
target));
t.tv_sec = deltime;
t.tv_nsec = 0;
isc_time_formathttptimestamp(&t, dbuf,
sizeof(dbuf));
RETERR(isc_str_tobuffer(dbuf, target));
}
}
}
return (ISC_R_SUCCESS);
}
static inline isc_result_t
fromwire_keydata(ARGS_FROMWIRE) {
isc_region_t sr;
REQUIRE(type == dns_rdatatype_keydata);
UNUSED(type);
UNUSED(rdclass);
UNUSED(dctx);
UNUSED(options);
isc_buffer_activeregion(source, &sr);
isc_buffer_forward(source, sr.length);
return (isc_mem_tobuffer(target, sr.base, sr.length));
}
static inline isc_result_t
towire_keydata(ARGS_TOWIRE) {
isc_region_t sr;
REQUIRE(rdata->type == dns_rdatatype_keydata);
UNUSED(cctx);
dns_rdata_toregion(rdata, &sr);
return (isc_mem_tobuffer(target, sr.base, sr.length));
}
#endif /* GENERIC_KEYDATA_65533_C */
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